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/* $Id: hw_logitech.c,v 1.13 2001/12/08 15:07:03 lirc Exp $ */
/****************************************************************************
** hw_logitech.c ***********************************************************
****************************************************************************
*
* routines for Logitech receiver
*
* Copyright (C) 1999 Christoph Bartelmus <lirc@bartelmus.de>
* modified for logitech receiver by Isaac Lauer <inl101@alumni.psu.edu>
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include "hardware.h"
#include "serial.h"
#include "ir_remote.h"
#include "lircd.h"
#include "hw_logitech.h"
#define NUMBYTES 16
#define TIMEOUT 50000
extern struct ir_remote *repeat_remote,*last_remote;
unsigned char b[NUMBYTES];
struct timeval start,end,last;
lirc_t gap,signal_length;
ir_code pre,code;
struct hardware hw_logitech=
{
LIRC_DRIVER_DEVICE, /* default device */
-1, /* fd */
LIRC_CAN_REC_LIRCCODE, /* features */
0, /* send_mode */
LIRC_MODE_LIRCCODE, /* rec_mode */
16, /* code_length */
logitech_init, /* init_func */
NULL, /* config_func */
logitech_deinit, /* deinit_func */
NULL, /* send_func */
logitech_rec, /* rec_func */
logitech_decode, /* decode_func */
NULL, /* readdata */
"logitech"
};
int logitech_decode(struct ir_remote *remote,
ir_code *prep,ir_code *codep,ir_code *postp,
int *repeat_flagp,lirc_t *remaining_gapp)
{
if(!map_code(remote,prep,codep,postp,
8,pre,8,code,0,0))
{
return(0);
}
gap=0;
if(start.tv_sec-last.tv_sec>=2) /* >1 sec */
{
*repeat_flagp=0;
}
else
{
gap=(start.tv_sec-last.tv_sec)*1000000+
start.tv_usec-last.tv_usec;
if(gap<remote->remaining_gap*(100+remote->eps)/100
|| gap<=remote->remaining_gap+remote->aeps)
*repeat_flagp=1;
else
*repeat_flagp=0;
}
*remaining_gapp=is_const(remote) ?
(remote->gap>signal_length ? remote->gap-signal_length:0):
remote->gap;
LOGPRINTF(1,"pre: %llx",(unsigned long long) *prep);
LOGPRINTF(1,"code: %llx",(unsigned long long) *codep);
LOGPRINTF(1,"repeat_flag: %d",*repeat_flagp);
LOGPRINTF(1,"gap: %lu",(unsigned long) gap);
LOGPRINTF(1,"rem: %lu",(unsigned long) remote->remaining_gap);
LOGPRINTF(1,"signal length: %lu",(unsigned long) signal_length);
return(1);
}
int logitech_init(void)
{
signal_length=hw.code_length*1000000/1200;
if(!tty_create_lock(hw.device))
{
logprintf(LOG_ERR,"could not create lock files");
return(0);
}
if((hw.fd=open(hw.device,O_RDWR|O_NONBLOCK|O_NOCTTY))<0)
{
logprintf(LOG_ERR,"could not open %s",hw.device);
logperror(LOG_ERR,"logitech_init()");
tty_delete_lock();
return(0);
}
if(!tty_reset(hw.fd))
{
logprintf(LOG_ERR,"could not reset tty");
logitech_deinit();
return(0);
}
if(!tty_setbaud(hw.fd,1200))
{
logprintf(LOG_ERR,"could not set baud rate");
logitech_deinit();
return(0);
}
return(1);
}
int logitech_deinit(void)
{
close(hw.fd);
tty_delete_lock();
return(1);
}
char *logitech_rec(struct ir_remote *remotes)
{
char *m;
int i=0;
int repeat, mouse_event;
b[i]=0x00;
last=end;
gettimeofday(&start,NULL);
while(b[i] != 0xAA)
{
i++;
if(i>=NUMBYTES)
{
LOGPRINTF(0,"buffer overflow",i);
break;
}
if(i>0)
{
if(!waitfordata(TIMEOUT))
{
LOGPRINTF(0,"timeout reading byte %d",i);
return(NULL);
}
}
if(read(hw.fd,&b[i],1)!=1)
{
logprintf(LOG_ERR,"reading of byte %d failed",i);
logperror(LOG_ERR,NULL);
return(NULL);
}
LOGPRINTF(1,"byte %d: %02x",i,b[i]);
if(b[i] >= 0x40 && b[i] <= 0x6F)
{
mouse_event=b[i];
b[1]=0xA0;
b[2]=mouse_event;
LOGPRINTF(1,"mouse event: %02x",mouse_event);
break;
}
}
gettimeofday(&end,NULL);
if(b[1] == 0xA0) repeat=0;
else repeat=1;
if(!repeat) pre=(ir_code) b[1];
else pre=0xA0;
code=(ir_code) b[2];
m=decode_all(remotes);
return(m);
}
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